code: def test4Freqs(self):
      mags = [1, 2, 3, 4]
      freqs = [100, 435, 6547, 24324]
  
      self.assertAlmostEqualVector(
          Tristimulus()(freqs, mags), [0.1, 0.9, 0]
      )
  
file_path: essentia/test/src/unittests/tonal/test_tristimulus.py
imports: from essentia_test import *
label_desc: Use image node_id 3 for calling the TestTristimulus obj's underlying member method code with example usage: obj.test4Freqs() without return types